In a way that makes another person feel small, stupid, or ashamed. You use it about how someone looks at you or speaks to you: they say something short and sharp, or just give you a certain look, and suddenly you feel like you did something silly. "She smiled witheringly" means her smile was not kind at all — it was the kind of smile that cuts. The word is about the EFFECT on the other person, not about anger. A witheringly rude person may sound calm and polite; that is often what makes it worse. You will meet it most with words like say, look, ask, and remark: "she looked at him witheringly", "'And who are you?' she asked witheringly." It is also used in a second, weaker way — just to mean "very", when something is strong enough to hurt: witheringly hot weather, a witheringly honest report. That use is less common in speech. Overall this is a written word. You will find it in novels, in news writing, in reviews of films and books. Real people in real conversation almost never say "witheringly"; they say "she gave me such a look". So know it for reading, and be careful using it for speaking.

輕蔑地、尖酸地（用話或眼神讓人覺得自己很蠢、很難堪）；也可指「極度地」